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Quantifying predictability of sequential recommendation via logical constraints

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Abstract

The sequential recommendation is a compelling technology for predicting users’ next interaction via their historical behaviors. Prior studies have proposed various methods to optimize the recommendation accuracy on different datasets but have not yet explored the intrinsic predictability of sequential recommendation. To this end, we consider applying the popular predictability theory of human movement behavior to this recommendation context. Still, it would incur serious bias in the next moment measurement of the candidate set size, resulting in inaccurate predictability. Therefore, determining the size of the candidate set is the key to quantifying the predictability of sequential recommendations. Here, different from the traditional approach that utilizes topological constraints, we first propose a method to learn inter-item associations from historical behaviors to restrict the size via logical constraints. Then, we extend it by 10 excellent recommendation algorithms to learn deeper associations between user behavior. Our two methods show significant improvement over existing methods in scenarios that deal with few repeated behaviors and large sets of behaviors. Finally, a prediction rate between 64% and 80% has been obtained by testing on five classical datasets in three domains of the recommender system. This provides a guideline to optimize the recommendation algorithm for a given dataset.

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Acknowledgements

This work was supported in part by the National Natural Science Foundation of China (Grant Nos. 61960206008, 62002294), and the National Science Fund for Distinguished Young Scholars (61725205).

Author information

Authors and Affiliations

  1. School of Computer Science, Northwestern Polytechnical University, Xi’an, 710129, China

    En Xu, Zhiwen Yu, Nuo Li, Helei Cui & Bin Guo

  2. School of Computer Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia

    Lina Yao

Authors
  1. En Xu
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  2. Zhiwen Yu
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  3. Nuo Li
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  4. Helei Cui
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  5. Lina Yao
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  6. Bin Guo
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Corresponding author

Correspondence to Zhiwen Yu.

Additional information

En Xu received the bachelor’s degree from Northwestern Polytechnical University, China. He is currently a PhD student with the School of Computer Science, Northwestern Polytechnical University, China. His research interests include recommender system and predictability.

Zhiwen Yu is currently a professor of the School of Computer Science, Northwestern Polytechnical University, China. He is the associate editor or editorial board of IEEE Transactions on Human-Machine Systems, IEEE Communications Magazine, ACM/Springer Personal and Ubiquitous Computing (PUC). His research interests include ubiquitous computing and mobile crowd sensing.

Nuo Li received the bachelor’s degree from Northwestern Polytechnical University, China. At the moment, she is a PhD student with the School of Computer Science, Northwestern Polytechnical University, China. Her research interests include social and community intelligence and crowd knowledge transfer.

Helei Cui is a professor from Northwestern Polytechnical University, China. He received his PhD degree in Computer Science from City University of Hong Kong (CityU), China in October 2018, under the supervision of Prof. Cong Wang (IEEE Fellow). Before that, he obtained MSc degree in Information Engineering from The Chinese University of Hong Kong (CUHK), China in November 2013 and BEng degree in Software Engineering from Northwestern Polytechnical University, China in July 2010. His research interests include industrial internet, secure crowdsensing, and distributed storage networks.

Lina Yao is currently a scientia associate professor at School of Computer Science and Engineering, the University of New South Wales (UNSW), Australia. She received her PhD degree and Master degree both from The University of Adelaide (UoA), Australia in 2014 and 2010, respectively, and her Bachelor degree from Shandong University (SDU), China. Her research interest lies in data mining and machine learning applications with the focuses on internet of things analytics, recommender systems, human activity recognition, and brain computer interface.

Bin Guo is a professor from Northwestern Polytechnical University, China. He received his PhD degree in computer science from Keio University, Japan in 2009 and then was a post-doc researcher at Institut TELECOM SudParis in France. His research interests include ubiquitous computing and mobile crowd sensing.

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Xu, E., Yu, Z., Li, N. et al. Quantifying predictability of sequential recommendation via logical constraints. Front. Comput. Sci. 17, 175612 (2023). https://doi.org/10.1007/s11704-022-2223-1

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